Three-dimensional folding frame, electric vehicle, bicycle, and motorcycle

ABSTRACT

A three-dimensional folding frame is disclosed including a first pivot portion for providing a front folding wheel frame with movable folding; a second pivot portion for providing a rear folding wheel frame with movable folding; a third pivot portion for providing a handlebar vertical rod with rotatable folding; and a fourth pivot portion for providing a crossbar with rotatable folding. The crossbar includes a first folding arm and a second folding arm; the first folding arm is movably connected to the front folding wheel frame by means of the first pivot portion; the front folding wheel frame rotates about the first pivot portion and can move relative to the first folding arm; the second folding arm is movably connected to the rear folding wheel frame by means of the second pivot portion.

CROSS-REFERENCE TO RELATED APPLICATIONS

This patent application is a continuation of U.S. Pat. application Ser. No. 17/594,526, which claims the benefit of International Application No. PCT/CN2019/121789, filed on Nov. 29, 2019, the entire disclosure of each of which is hereby incorporated by reference.

TECHNICAL FIELD

The disclosure relates to a three-dimensional folding frame, an electric vehicle, a bicycle, and a motorcycle.

BACKGROUND

According to market investigation and patent search, it is found that a folding mechanism of an existing folding vehicle, such as an electric vehicle, a bicycle, a motorcycle, a motor vehicle, etc. is unreasonable due to limited folding space and large occupied space. Only folding in a plane (i.e., in an X direction and a Y direction) is generally implemented. Moreover, the folding vehicle has a complicated folding structure and a high manufacturing cost, and is not conducive to turnover and placement.

In order to overcome the above defects, we developed a three-dimensional folding frame, an electric vehicle, a bicycle, and a motorcycle.

SUMMARY

The technical problem to be solved by the disclosure is to provide a three-dimensional folding frame, an electric vehicle, a bicycle, and a motorcycle, which can be subject to free three-dimensional folding and effectively compress a folding space, have a small storage volume, are easy to realize mass manufacturing and use, and have a low manufacturing cost. After folding, all parts are in a compact and parallel state, just like all pivot portions are disassembled first and then the parts are put together.

In order to achieve the above objective, the technical solution in the disclosure is to provide a three-dimensional folding frame, which includes:

-   a first pivot portion for providing a front folding wheel frame with     movable folding; -   a second pivot portion for providing a rear folding wheel frame with     movable folding; -   a third pivot portion for providing a handlebar vertical rod with     rotatable folding; and -   a fourth pivot portion for providing a crossbar with rotatable     folding, where the crossbar includes a first folding arm and a     second folding arm; the first folding arm is movably connected to     the front folding wheel frame by means of the first pivot portion,     and the front folding wheel frame is rotatable about the first pivot     portion and is movable relative to the first folding arm to form a     three-dimensional movement freely folded state; -   the second folding arm is movably connected to the rear folding     wheel frame by means of the second pivot portion; the rear folding     wheel frame is rotatable about the second pivot portion and is     movable relative to the second folding arm to form a     three-dimensional movement freely folded state; and -   the first folding arm and the second folding arm are switchable     between a folded state and an unfolded state by means of rotation of     the fourth pivot portion.

In one or more embodiments of the disclosure, the front folding wheel frame is connected to a handlebar vertical rod holder, the handlebar vertical rod holder is connected to the front folding wheel frame by means of the third pivot portion to perform three-dimensional folding on the handlebar vertical rod, and the handlebar vertical rod holder is rotatable in a Z direction while rotating in X and Y directions.

In one or more embodiments of the disclosure, the first folding arm is foldable with respect to the front folding wheel frame, the second folding arm is foldable with respect to the rear folding wheel frame, and according to different states required, the crossbar is rotatably foldable with respect to the front folding wheel frame and the rear folding wheel frame in planar motion.

In one or more embodiments of the disclosure, both the front folding wheel frame and the rear folding wheel frame are engaged with the crossbar by using a cone surface and a quick detachable structure, so as to realize quick and accurate alignment and automatic locking, and avoid shaking during driving.

Under the same conception, the disclosure further provides a three-dimensional folding frame, which includes:

-   a folding wheel frame including a front folding wheel frame and a     rear folding wheel frame; -   a front wheel connected to the front folding wheel frame; -   a rear wheel connected to the rear folding wheel frame; -   where the front folding wheel frame is foldable at different     functional positions at a front end of a crossbar by means of a     three-dimensional movement of a first pivot portion, and the rear     folding wheel frame is foldable at different functional positions at     a rear end of the crossbar by means of a three-dimensional movement     of the second pivot portion; the first pivot portion and the second     pivot portion are capable of performing a translational movement     while rotating; -   the crossbar includes a first folding arm and a second folding arm;     the first folding arm and the second folding arm are switchable     between a folded state and an unfolded state by means of the     rotation of a fourth pivot portion; -   a handlebar vertical rod holder is connected to the front folding     wheel frame by means of the third pivot portion to perform     three-dimensional folding on a handlebar vertical rod, and the     handlebar vertical rod holder is rotatable in a Z direction while     rotating in X and Y directions; -   a folding form that the crossbar is foldable with respect to the     front folding wheel frame and the rear folding wheel frame is     implemented; three-dimensional folding of the crossbar with respect     to the folding wheel frame which are capable of rotating and     translating at the same time is implemented; and three-dimensional     folding of the handlebar vertical rod with respect to the front     folding wheel frame which rotate in X, Y and Z directions at the     same time is implemented.

In one or more embodiments of the disclosure, the folding wheel frame is provided with a supporting shaft, the crossbar is movably engaged with the supporting shaft, and the folding wheel frame is movable on a Z axis until a storage volume is minimum when the first folding arm is folded to the second folding arm.

In one or more embodiments of the disclosure, the second folding arm is provided with a hinge holder, and the hinge holder is connected to a saddle rod so that the saddle rod is foldable close to the second folding arm; and the saddle rod and a saddle holder are foldable relative to the saddle rod by means of a hinged locking portion.

Under the same conception, the disclosure further provides an electric vehicle including the three-dimensional folding frame in the solution above.

Under the same conception, the disclosure further provides a bicycle including the three-dimensional folding frame in the solution above.

Under the same conception, the disclosure further provides a motorcycle including the three-dimensional folding frame in the solution above.

Compared with the background art, the disclosure has the following beneficial effects.

Due to adoption of the solution above, the disclosure has a reasonable structure, can be subject to three-dimensional folding and effectively compress a folding space, has a small storage volume, is easy to realize mass manufacturing and use, and has a low manufacturing cost; and after folding, all parts are in a compact and parallel state, just like all pivot portions are disassembled first and then the parts are put together. According to different states required, optionally, the crossbar may only be rotatably folded with the front folding wheel frame and the rear folding wheel frame in planar motion.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a structure of a three-dimensional folding frame in an embodiment of the disclosure;

FIG. 2 is a schematic diagram of a stereoscopic structure of the three-dimensional folding frame in the embodiment of the disclosure;

FIG. 3 is a schematic diagram of the stereoscopic structure of the three-dimensional folding frame in the embodiment of the disclosure in another state;

FIG. 4 is a schematic diagram of a storage structure of the three-dimensional folding frame in the embodiment of the disclosure;

FIG. 5 is a schematic diagram of the storage structure of the three-dimensional folding frame in the embodiment of the disclosure in another view;

FIG. 6 is a schematic diagram of a combined structure of a front folding wheel frame, a first folding arm, a pivot portion and a front vertical rod in the embodiment of the disclosure;

FIG. 7 is a schematic diagram of a handle in a folded state in the embodiment of the disclosure;

FIG. 8 is a schematic diagram of combined and folded front folding wheel frame, first folding arm, pivot portion and front vertical rod in a state in the embodiment of the disclosure; and

FIG. 9 is a schematic diagram of a structure of a rear folding wheel frame and a second folding arm in a rotatably separated state in the embodiment of the disclosure.

DETAILED DESCRIPTION

The embodiments of the disclosure will be described in detail hereinafter. Examples of the embodiments are shown in the accompanying drawings. The same or similar reference numerals throughout the drawings denote the same or similar elements or elements having the same or similar functions.

The orientations shown in the accompanying drawings cannot be understood as limiting the specific scope of protection of the disclosure, and are only used for the reference understanding of the preferred embodiments, and the product parts shown in the accompanying drawings can be changed in position or increased in number or simplified in structure.

The “connection” described in the specification and the “connection” relationship between the parts shown in the accompanying drawings can be understood as fixed connection or detachable connection or integral connection, and can also be direct connection or connection through an intermediate medium. Those of ordinary skills in the art can understand the connection relationship according to the specific situation and substitute different embodiments in a suitable way. In the orientations shown in the accompanying drawings, the parts can be directly contacted or contacted through other features between the parts. For example, the term “above” may refer to “directly above” and “obliquely above”, or only refer to being higher than other objects. Other orientations can also be understood by analogy.

The embodiments of the disclosure are further described hereinafter with reference to the accompanying drawings of the specification, so that the technical solutions and beneficial effects of the disclosure are clearer and more definite; and the description is intended to explain the disclosure and shall not be understood as limiting the disclosure.

As shown in FIG. 1 to FIG. 9 , a three-dimensional folding frame is provided according to an embodiment of the disclosure, which includes: a first pivot portion 2 for providing a front folding wheel frame 1 with movable folding; a second pivot portion 4 for providing a rear folding wheel frame 3 with movable folding; a third pivot portion 6 for providing a handlebar vertical rod 5 with rotatable folding; and a fourth pivot portion 8 for providing a crossbar 7 with rotatable folding. The crossbar 7 includes a first folding arm 71 and a second folding arm 72. The first folding arm 71 is movably connected to the front folding wheel frame 1 by means of the first pivot portion 2, and the front folding wheel frame 1 is rotatable about the first pivot portion 2 and movable relative to the first folding arm 71 to form a three-dimensional movement freely folded state.

The second folding arm 72 is movably connected to the rear folding wheel frame 3 by means of the second pivot portion 4. The rear folding wheel frame 3 is rotatable about the second pivot portion 4 and movable relative to the second folding arm 72 to form a three-dimensional movement freely folded state. The first folding arm 71 and the second folding arm 72 may switch between a folded state and an unfolded state by means of the rotation of the fourth pivot portion 8.

The front folding wheel frame 1 is connected to a handlebar vertical rod holder 10, the handlebar vertical rod holder 10 is connected to the front folding wheel frame 1 by means of the third pivot portion 6 to perform three-dimensional folding on the handlebar vertical rod 5, and the handlebar vertical rod holder 10 may rotate in a Z direction while rotating in X and Y directions.

The first folding arm 71 is foldable with respect to the front folding wheel frame 1, the second folding arm 72 is foldable with respect to the rear folding wheel frame 3, and according to different states required, the crossbar 7 is rotatably foldable with respect to the front folding wheel frame 1 and the rear folding wheel frame 3 in planar motion.

The front folding wheel frame 1 is engaged with the first folding arm 71 by using a first block 73 a that interfaces with a first groove 74 a and a quick detachable structure 9, and the rear folding wheel frame 3 is engaged with the second folding arm 72 by using a second block 73 b that interfaces with a second groove 74 b and a quick detachable structure 9, so as to realize quick and accurate alignment and automatic locking, and avoid shaking during driving.

Further, the front folding wheel frame 1 may be folded at different functional positions at a front end of the crossbar 7 by means of three-dimensional movement of the first pivot portion 2, and the rear folding wheel frame 3 may be folded at different functional positions at a rear end of the crossbar by means of three-dimensional movement of the second pivot portion 4. The first pivot portion 2 and the second pivot portion 4 are capable of performing a translational movement while rotating.

The handlebar vertical rod holder 10 is connected to the front folding wheel frame 1 by means of the third pivot portion 6 to perform three-dimensional folding on the handlebar vertical rod 5, and the handlebar vertical rod holder 10 may rotate in a Z direction while rotating in X and Y directions. An inclined shaft is employed in the third pivot portion 6 to prevent the handlebar vertical rod 5 from colliding with the crossbar 7 when the handlebar vertical rod 5 is tilted and folded downwardly.

A folding form that the crossbar 7 is foldable with respect to the front folding wheel frame 1 and the rear folding wheel frame 3 is implemented, three-dimensional folding of the crossbar 7 with respect to the folding wheel frame which are capable of rotating and translating at the same time is implemented, and three-dimensional folding of the handlebar vertical rod 5 with respect to the front folding wheel frame which rotate in X, Y and Z directions at the same time is implemented. The folding wheel frame is provided with a supporting shaft 11, the crossbar 7 is movably engaged with the supporting shaft 11, and the folding wheel frame may move on a Z axis until a storage volume is minimum when the first folding arm 71 is folded to the second folding arm 72.

The second folding arm 72 is provided with a hinge holder 12, and the hinge holder 12 is connected to a saddle rod 13 so that the saddle rod 13 is folded close to the second folding arm 72. The hinge holder and the saddle rod may be movably connected to be folded by using a fifth pivot portion 14. A saddle holder 15 is folded relative to the saddle rod 13 by means of a hinged locking portion 16.

A telescopic rod 17 is connected above the handlebar vertical rod 5, the telescopic rod 17 is connected to a handle supporting portion 18, and the handle supporting portion 18 and the handle are folded by means of a hinged sleeve structure 19.

In combination with the description above and all accompanying drawings, the three-dimensional folding frame provided by the disclosure may be applied to an electric vehicle, a bicycle, a motorcycle, a motor vehicle, etc., or other vehicles or devices including the three-dimensional folding frame of the solution above, so that the vehicles have a reasonable structure, may be subject to three-dimensional folding and effectively compress a folding space, have a small storage volume, are easy to realize mass manufacturing and use, and have a low manufacturing cost. After folding, all parts are in a compact and parallel state, just like all pivot portions are disassembled first and then the parts are put together. According to different states required, the crossbar may only be rotatably folded with the front folding wheel frame and the rear folding wheel frame in planar motion.

The disclosure is described in terms of the above embodiments, but there may still be alterations, replacements and equivalent solutions falling within the scope of the disclosure. There are also many alternative ways to implement the disclosure. Therefore, it is intended to interpret the appended claims as including all such alterations, replacements and equivalent solutions falling within the gist and scope of the disclosure. It shall be understood by those of ordinary skills in the art that the disclosure is not limited to the above embodiments, and the improvements and substitutions by the technologies commonly known in the art based on the disclosure all fall within the scope of protection of the disclosure, which shall be defined by the claims. 

1. A three-dimensional folding frame, comprising: a first pivot portion for providing a front folding wheel frame with movable folding; a second pivot portion for providing a rear folding wheel frame with movable folding; a crossbar is movably connected to the front folding wheel frame by means of the first pivot portion, and the front folding wheel frame is rotatable about the first pivot portion and is movable relative to the crossbar to form a first three-dimensional movement freely foldable state; the crossbar is movably connected to the rear folding wheel frame by means of the second pivot portion; the rear folding wheel frame is rotatable about the second pivot portion and is movable relative to the crossbar to form a second three-dimensional movement freely foldable state.
 2. The three-dimensional folding frame according to claim 1, further comprising a third pivot portion and a fourth pivot portion; the front folding wheel frame is connected to a handlebar vertical rod holder, the handlebar vertical rod holder is connected to the front folding wheel frame by means of the third pivot portion to perform three-dimensional folding on the handlebar vertical rod, and the handlebar vertical rod holder is rotatable in a Z direction while rotating in X and Y directions; the crossbar comprises a first folding arm and a second folding arm; the first folding arm and the second folding arm are switchable between a folded state and an unfolded state by means of rotation of the fourth pivot portion.
 3. The three-dimensional folding frame according to claim 1, wherein each of the front folding wheel frame and the rear folding wheel frame is provided with a supporting shaft, the crossbar is movably engaged with the supporting shafts, the three-dimensional folding frame reaches a minimum storage volume when the front folding wheel frame and the rear folding wheel frame move to one side of the crossbar on a Z axis.
 4. The three-dimensional folding frame according to claim 1, wherein the front folding wheel frame is engaged with the crossbar by using a first block that joints with a first groove and a quick detachable structure, the rear folding wheel frame is engaged with the crossbar by using a second block that joints with a second groove and a quick detachable structure, so as to realize quick and accurate alignment and automatic locking, and avoid shaking during driving.
 5. A three-dimensional folding frame, comprising: a folding wheel frame comprising a front folding wheel frame and a rear folding wheel frame; a front wheel connected to the front folding wheel frame; a rear wheel connected to the rear folding wheel frame; wherein the front folding wheel frame is foldable at different functional positions at a front end of a crossbar by means of a first three-dimensional movement of a first pivot portion, and the rear folding wheel frame is foldable at different functional positions at a rear end of the crossbar by means of a rotational movement of a second pivot portion; the first pivot portion is capable of performing a translational movement while rotating.
 6. The three-dimensional folding frame according to claim 5, wherein the front folding wheel frame is provided with a supporting shaft, the crossbar is movably engaged with the supporting shaft, and the three-dimensional folding frame reaches a minimum storage volume when the front folding wheel frame moves to one side of the crossbar on a Z axis.
 7. The three-dimensional folding frame according to claim 6, wherein the crossbar is provided with a hinge holder, and the hinge holder is connected to a saddle rod so that the saddle rod is foldable close to the crossbar; and a saddle holder is foldable relative to the saddle rod by means of a hinged locking portion.
 8. A three-dimensional folding frame, comprising: a folding wheel frame comprising a front folding wheel frame and a rear folding wheel frame; a front wheel connected to the front folding wheel frame; a rear wheel connected to the rear folding wheel frame; wherein the front folding wheel frame is foldable at different functional positions at a front end of a crossbar by means of a rotational movement of a first pivot portion, and the rear folding wheel frame is foldable at different functional positions at a rear end of the crossbar by means of a second three-dimensional movement of a second pivot portion; the second pivot portion is capable of performing a translational movement while rotating.
 9. The three-dimensional folding frame according to claim 8, wherein the rear folding wheel frame is provided with a supporting shaft, the crossbar is movably engaged with the supporting shaft, and the three-dimensional folding frame reaches a minimum storage volume when the rear folding wheel frame moves to one side of the crossbar on a Z axis.
 10. The three-dimensional folding frame according to claim 9, wherein the crossbar is provided with a hinge holder, and the hinge holder is connected to a saddle rod so that the saddle rod is foldable close to the crossbar; and a saddle holder is foldable relative to the saddle rod by means of a hinged locking portion.
 11. An electric vehicle, comprising the three-dimensional folding frame according to claim
 1. 12. A bicycle, comprising the three-dimensional folding frame according to claim
 1. 13. A motorcycle, comprising the three-dimensional folding frame according to claim
 1. 14. An electric vehicle, comprising the three-dimensional folding frame according to claim
 5. 15. A bicycle, comprising the three-dimensional folding frame according to claim
 5. 16. A motorcycle, comprising the three-dimensional folding frame according to claim
 5. 17. An electric vehicle, comprising the three-dimensional folding frame according to claim
 8. 18. A bicycle, comprising the three-dimensional folding frame according to claim
 8. 19. A motorcycle, comprising the three-dimensional folding frame according to claim
 8. 